Zomwe Zimagwira pa Sodium carboxymethylcellulose viscosity

Kukhuthala kwa sodium carboxymethylcellulose (CMC) mayankho amatha kutengera zinthu zingapo. Nazi zina mwazinthu zazikulu zomwe zimakhudza kukhuthala kwa mayankho a CMC:

1. Kuyikira Kwambiri: Kuwoneka bwino kwamayankho a CMC nthawi zambiri kumawonjezeka ndikuchulukirachulukira. Kuchulukirachulukira kwa CMC kumabweretsa maunyolo ambiri a polima mu yankho, zomwe zimapangitsa kuti ma cell atsekedwe komanso kukhuthala kwambiri. Komabe, nthawi zambiri pamakhala malire pakuwonjezeka kwa viscosity pamalo apamwamba chifukwa cha zinthu monga yankho la rheology ndi kuyanjana kwa polymer-solvent.
2. Degree of Substitution (DS): Mlingo wolowa m'malo umatanthawuza kuchuluka kwamagulu a carboxymethyl pagawo la shuga mu unyolo wa cellulose. CMC yokhala ndi DS yapamwamba imakonda kukhala ndi mamasukidwe apamwamba chifukwa imakhala ndi magulu odzaza kwambiri, omwe amalimbikitsa kuyanjana kwamphamvu kwapakati komanso kukana kwambiri kuyenda.
3. Kulemera kwa Mamolekyulu: Kulemera kwa maselo a CMC kumatha kukhudza kukhuthala kwake. Kulemera kwa maselo a CMC nthawi zambiri kumabweretsa mayankho apamwamba a viscosity chifukwa chakuchulukirachulukira kwa unyolo komanso maunyolo aatali a polima. Komabe, kulemera kwambiri kwa maselo a CMC kungapangitsenso kuwonjezereka kwa kukhuthala kwa yankho popanda kuwonjezeka kofanana ndi kukhuthala kwachangu.
4. Kutentha: Kutentha kumakhudza kwambiri kukhuthala kwa mayankho a CMC. Nthawi zambiri, mamasukidwe akayendedwe amachepa kutentha kumawonjezeka chifukwa cha kuchepa kwa ma polima ndi zosungunulira za polima komanso kuchuluka kwa ma cell. Komabe, zotsatira za kutentha pa viscosity zimatha kusiyana kutengera zinthu monga polima, kulemera kwa maselo, ndi yankho pH.
5. pH: The pH ya yankho la CMC ingakhudze mamasukidwe ake chifukwa cha kusintha kwa polymer ionization ndi conformation. CMC nthawi zambiri imakhala yowoneka bwino pamtengo wapamwamba wa pH chifukwa magulu a carboxymethyl amakhala ndi ionized, zomwe zimapangitsa kuti pakhale kukanidwa kwamphamvu kwamagetsi pakati pa maunyolo a polima. Komabe, zovuta za pH zimatha kubweretsa kusintha kwa kusungunuka kwa polima ndi ma conformation, zomwe zingakhudze mamasukidwe akayendedwe mosiyanasiyana kutengera kalasi ya CMC ndi kapangidwe kake.
6. Mchere wa Mchere: Kukhalapo kwa mchere mumcherewu kumatha kukhudza kukhuthala kwa mayankho a CMC kudzera pakuchitana kwa polymer-solvent ndi ion-polymer interactions. Nthawi zina, kuwonjezera mchere kungachititse mamasukidwe mamasukidwe akayendedwe powunika repulsions electrostatic pakati polima unyolo, pamene zina, kumachepetsa mamasukidwe akayendedwe ndi kusokoneza polima zosungunulira kucheza ndi kulimbikitsa polima aggregation.
7. Shear Rate: Kuthamanga kwa mayankho a CMC kungadalirenso kumeta ubweya kapena kuchuluka komwe kupsinjika kumagwiritsidwa ntchito pa yankho. Mayankho a CMC nthawi zambiri amawonetsa kumeta ubweya wa ubweya, pomwe kukhuthala kumachepa ndikumeta ubweya wochulukira chifukwa cha kulumikizana ndi kuwongolera kwa maunyolo a polima motsatira njira yotuluka. Kukula kwa kumeta ubweya wa ubweya kumatha kusiyanasiyana kutengera zinthu monga ndende ya polima, kulemera kwa mamolekyulu, ndi yankho la pH.

kukhuthala kwa sodium carboxymethylcellulose solutions kumakhudzidwa ndi zinthu zingapo kuphatikiza kukhazikika, kuchuluka kwa m'malo, kulemera kwa maselo, kutentha, pH, mchere wamchere, komanso kumeta ubweya. Kumvetsetsa zinthu izi ndikofunikira pakukwaniritsa kukhathamiritsa kwa mayankho a CMC pazogwiritsa ntchito zinazake m'mafakitale monga chakudya, mankhwala, zodzoladzola, komanso chisamaliro chamunthu.